Is it normal for people with dementia to suddenly be obsessed with sex chatting sites etc?

I hate to say this is music to my ears but....this is music to my ears. My husband is 86, I am 68. Almost a year ago I discovered that my husband was privately messaging the women who followed him on Twitter and frequenting soft porn sites on Facebook. After a couple arguments about this he declared he had gotten off Twitter because he was getting into too much trouble but after a peek at his phone I saw he had created both a Hangouts and WhatsApp sites with all those same women on them (including porn stars). He's continued with Twitter and although we don't follow each other I can see his activity which is really over the top making inappropriate comments to women. Out of curiosity I created two fake women profiles and started following him. I WAS SORRY I DID THAT. It was total sexting and he would text them when he got up at night to use the BR....it was pretty close to stalking. Sometimes he shares these things with me and claims there have been at least 100 women (all in the age group of 25 to 30) who have all asked for "cards" and when he turns them down he loses them as a "friend." He actually calls them friends. One really good "friend" has now received $720 from him because she was stuck in Africa. Obviously he discussed this with me. But he believes each and every sob story he has heard and feels guilty that he's not helping them. He tells me I'm too suspicious and jealous. Only recently have I realized that I can't talk about this subject with any rationality because he gets so defensive that he has talked about divorce on several occasions. I appreciated someone saying "don't take it personally" but it really is hard. I know that someone could sit down and chat with my husband and think he's perfectly fine. I'm on anti-anxiety meds but feel like I'm getting an ulcer! I'm sorry, all I did is vent; I don't have an answer but consider myself a kindred spirit :(

I think you should be asking if it is “common”
My Husband never did. Totally opposite for him he wanted no intimate contact. I could give him a hug but he would not hug back.
I could give him a kiss when I left the house and when I returned and he would give me a kiss but he would not initiate the kiss. And we are talking a quick kiss not a deep loving kiss. But that was him.
I have heard others in support groups I have been in and they have also experienced spouses with heightened libidos.
Do not doubt his fidelity. This is the broken brain at work not him. Try to see if you can put “parental controls” in effect on the computer and I would also block his use of credit cards.

My mom, 95 yrs. old, with dementia, suddenly started touching herself "inappropriately" when she thought no one was around and it was hugely embarrassing to anyone who caught her at it. The nurses said this was very common and gave her medication to reduce this behavior. We had tried talking to her before putting her on medication, but it didn't help. Medicine worked.

Dementia can cause damage to different areas of the brain. He appears to have problems with controlling impulsive urges. This is very common with damage to certain parts of the brain. A few suggestions

1 - Change passwords to logon to computers and websites.

2 - Tell him your bank accounts have been "hacked". The "bank" (you) will send new cards (reloadable gift card that looks like a credit card). Destroy his cards and keep your bank info and credit/debit card(s) under lock and key.

3 - Talk to his doctor about his impulse control issues. His primary care doctor may make a referral to a neurologist for evaluation and treatment,

4 - Limit all sexually stimulating inputs to things that revolve around you.

5 - Praying for you!

Apparently yes; cognitive issues impact the affected person's ability to control impulses. My dad used to be very shy and reserved until his radiation therapy for a frontal lobe meningioma. After treatment, and cognitive issues arising from said treatment and other medical issues I was forced to move him into an AL MC. At the AL he became a lean, mean love machine. 1 year, 2 girlfriends later he decided to up the steaks and hit on his Physical Therapist.

As Zippy and MAC above mentioned, please do not take it personally, it is beyond their control, it is the illness talking and acting.

Best wishes.

Like ZippyZee said early on, it's called Inappropriate Sexual Behavior or ISB and happens quite a bit with dementia and Alzheimer's. There are medications his doctor can prescribe to calm down his libido especially if he becomes aggressive with YOU and expecting lots of sex, or forcing himself on you. We see that quite often here. If his doctor has never heard of ISB, find a new doctor who's well versed with dementia.

Good luck!

Yes. My Father, who was 88, thought he was 13 yrs old. Girl crazy. Would chase anyone female and wanted to ask them out. I told him he was married. He thought my Mother, his wife was HIS Mother! Kinda of funny, kinda not. Dementia is f-ed up.

So thankful my 87 year old Mom has never learned how to use the computer.

Yes. My 89 year old mom with vascular dementia talked endlessly about how all the "boys" at the facility would fight over her. They all wanted to sleep with her. Normally she had been modest and reserved. Jarring for me at first, but at least it was more pleasant than when she kept saying how the staff was trying to kill her. Dementia sucks, but what can you do?

My dad began going on porn sites and of course his computer was being compromised with malware etc. he began having spam attacks and all kinds of issues. Finally I got his computer and had a person who knew how to change it so I was the administrator with password protection and we added parental control tools so that certain search words would be blocked. Also downloaded Malwarebytes so I could do occasional scans for malware. This really helped. He would complain he couldn’t always pull up a site so I knew it was working. As he progressed further and was in LTC, he would make sexually inappropriate comments to staff. To say the least, they said they’ve heard it all from many residents.